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Displacement of a viscoplastic fluid in an inclined slot

By B.W. van de Fliert and J.B. van den Berg


The steady displacement of one viscoplastic fluid by another is studied in an inclined channel. The aim is a prediction of the finger width from simple balance laws. It is argued that no accurate prediction can be acquired from the far field velocity profiles only, but that instead a calculation of the two dimensional behaviour near the free interface is needed. It is suggested that the static residual thickness can be determined from a minimization procedure for the dissipation in the system

Topics: Energy and utilities
Year: 1999
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